Improving Precision and Accuracy of Isotope Ratios from Short Transient Laser Ablation-Multicollector-Inductively Coupled Plasma Mass Spectrometry Signals: Application to Micrometer-Size Uranium Particles

2016 ◽  
Vol 88 (8) ◽  
pp. 4375-4382 ◽  
Author(s):  
Fanny Claverie ◽  
Amélie Hubert ◽  
Sylvain Berail ◽  
Ariane Donard ◽  
Fabien Pointurier ◽  
...  
2018 ◽  
Vol 33 (6) ◽  
pp. 1076-1080 ◽  
Author(s):  
Z. Varga ◽  
M. Krachler ◽  
A. Nicholl ◽  
M. Ernstberger ◽  
T. Wiss ◽  
...  

A multi-collector inductively coupled plasma mass spectrometer (MC-ICP-MS) coupled to a 213 nm ns-laser was used to measure uranium isotope ratios (234U/238U, 235U/238U, and 236U/238U) in six solid nuclear certified reference materials (CRMs).


2000 ◽  
Vol 57 (6) ◽  
pp. 1232-1242 ◽  
Author(s):  
Simon R Thorrold ◽  
Stephen Shuttleworth

We applied laser ablation sector field inductively coupled plasma mass spectrometry (SF-ICP-MS) to the analysis of trace element and isotopic signatures in fish otoliths. Manganese, Sr, and Ba profiles across juvenile Atlantic croaker (Micropogonias undulatus) otoliths, expressed as ratios to Ca, showed considerable spatial and temporal variations that were presumably reflective of variations in water chemistry over the same scales. Differences in otolith Mn:Ca ratios between adjacent rivers in Pamlico Sound, North Carolina, may be related to dissolved oxygen levels in the rivers through reductive release of Mn2+ from sediments. Strontium and Ba profiles appeared to accurately reflect differences in dissolved Sr and Ba in freshwater end-members, both between Pamlico Sound and Chesapeake Bay and between seasons within Chesapeake Bay. High-precision analyses of Sr:Ca ratios in a black drum (Pogonias cromis) otolith showed distinctive quasi-sinusoidal cycles that were correlated with validated annual bands. Analyses of Sr and Pb isotopes, in otoliths and standard reference material, respectively, found that SF-ICP-MS produced accurate and precise estimates of isotope ratios in both solution-based and laser ablation assays.


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